/*
 * Copyright 2011 Christoph Ludwig (christoph[at]chludwig.de). All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package de.chludwig.ehumanities.provenance.jaxb;

import java.text.MessageFormat;

import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;

import de.chludwig.ehumanities.provenance.exception.InitializationException;

/**
 * Factory for JAXB marshallers.
 */
public class MarshallerFactory {

  public static final MessageFormat CREATE_MARSHALLER_EXCEPTION_MSG = new MessageFormat("could not initialize {0} marshaller");
  public static final MessageFormat CREATE_CONTEXT_EXCEPTION_MSG = new MessageFormat("could not initialize JAXB context for {0}");
  

  public static Marshaller createMarshaller(Class<?> jaxbClass) {
    try {
      JAXBContext jc = createJAXBContext(jaxbClass);
      Marshaller m = jc.createMarshaller();
      return m;
    }
    catch (JAXBException ex) {
      String msg = CREATE_MARSHALLER_EXCEPTION_MSG.format(jaxbClass.getSimpleName());
      throw new InitializationException(msg, ex);
    }    
  }
  
  
  public static JAXBContext createJAXBContext(Class<?> jaxbClass) {
    try {
      JAXBContext jc = JAXBContext.newInstance(WorkflowContainerType.class);
      return jc;
    }
    catch (JAXBException ex) {
      String msg = CREATE_CONTEXT_EXCEPTION_MSG.format(jaxbClass.getSimpleName());
      throw new InitializationException(msg, ex);
    }    
  }
  

}
